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Dialogflow vs Lex vs Watson vs Wit vs Azure Bot


Devashish Datt Mamgain

Chatbots are a revolution in customer communication. Nowadays, companies are relying heavily on chatbots to automate and reduce the workload on humans.

At Kommunicate, we evaluated many chatbot building platforms for various use cases such as customer support and service. Below is the list of chatbot platforms which got our attention.

We are sharing all the details which we gathered for figuring out the best NLP chatbot platforms. Below is the list of best chatbots platforms and their comparison on features, channels, pricing, languages support, etc.

Tl; Dr: The comparison table below summarizes the comparison of Dialogflow vs Lex vs Watson vs Wit vs Azure Bot. Feel free to share/download.

Let’s now discuss each of these platforms and attributes in details.

Dialogflow previous known as is a Google-owned developer of human-computer interaction technologies based on natural language conversations.

It is a completely closed-source product with APIs and web interface. Dialogflow got acquired by Google in 2016.

Companies are using Dialogflow to build natural and rich conversational experiences. Using Dialogflow, you can let your users interact with your product through voice and text-based conversational interface.

Dialogflow provides a web interface to create bots which makes it easy to even non-techies to create basic bots. The basic attributes such as Intents, Entities, Actions are easy to understand and configure.

You could make a basic Q and A chatbot with Dialogflow in a matter of hours.

Dialogflow provides integration with Google Assistant, websites, Slack, Facebook Messenger, Skype, Twitter, and many others.

The web demo to integrate into your website is quite basic. If you are looking to add it to your websites and mobile apps, you will either have to develop your own UI and integrate with dialogflow APIs or use solutions such as Kommunicate that lets you integrate Dialogflow into your products easily.

Bonus>> Codeless Dialogflow chatbot integration with websites in 4 simple steps

At present, Dialogflow supports 20 languages, check this for up to language support list here.

Standard edition which is ideal for small to medium businesses is Free.

Enterprise plan starts with $0.002 per request

Amazon Lex service is used for building conversational interfaces in your application using voice and/or text. It is powered by the same deep learning technologies as Alexa.

Lex provides a web interface to create and launch bots.

Currently, the integration support is limited to Facebook, Kik, Slack and Twilio SMS.

For testing on websites, there is a basic chat UI provided through open source code.

Here’s how the basic web chat preview looks like:

Currently, Lex supports only US English.

You are charged based on the number of text or voice requests processed by your bot.

Voice requests are charged at $0.004/request while text requests are priced at $0.00075/request.

For the first year, 10,000 text requests and 5,000 speech requests per month are free.

Watson Assistant is an offering for building conversational interfaces into any application, device or channel. Watson has support for searching for an answer from the knowledge base and also have the capability to hand over to a human.

IBM Watson Assistant provides a good and easy to navigate user interface. Once you create an account, you will get video tutorials and ready to use samples to quickly get started. First, you need to create a Skill and then go to Assistant to integrate it with other channels.

You can connect Watson with Facebook Messenger, Slack, Voice Agent (Telephony), WordPress plug-in and also custom applications through APIs.

Most of the language Watson supports are in beta. Supports 10+ languages (in BETA) including English, Spanish, Japanese, Italian, Chinese etc.

There are multiple plans available starting from free plan for up to 10,000 messages per month. Paid plan starts with Lite at $0.0025/message

With, you can easily create text and voice-based bots and connect them to their preferred messaging platform. provides UI to setup intents and test it out. is very developer centric and non-techies will have a hard time understanding it.

Direct integrations through the web interface are not present, all integrations are through HTTP APIs, and libraries available in Node js, Python, Ruby and Go. Libraries are available here.

Not available, you will have to design your own.

Supports 50+ national and regional languages including English, Spanish, Afrikaans, etc. Find the complete list here.

Wit is free, both for personal and commercial use.

Microsoft’s Azure Bot Service is used for creating intelligent bots.

The web interface is available to create and publish bots which is fairly easy to understand.

The chatbot created through Azure Bot Service can be published to different channels such as Web, Facebook Messenger, Skype and Skype for Business, Microsoft Teams, Slack, etc.

Here is the list of integrations present.

Open source web chat widget is available in Github.

Supports multiple languages such as English, French, German, Spanish, etc

Azure bot service comes with a free plan of 10,000 messages/month. Post that, pricing is $0.50 per 1,000 messages. Apart from this, they also charge you for resources consumed on Azure functions and Azure web app.

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